Open Commenting Available Again

I've re-enabled open commenting on Nuketown (meaning posts will be posted without being pre-screened). The Mollom module for Drupal has been doing an admirable job catching spam and I think it's up to the task.

We'll see what actually happens; if we get a major spam attack that Mollom can't handle, I'll have to fall back to the "must authenticate to post without approval" stance I've had since June.